Put the following events in the order in which they occur during skeletal muscle

Question

Put the following events in the order in which they occur during skeletal muscle contraction.

1.end plate potentials trigger action potentials

2.ACh binds to receptors on the motor end plate

3.binding sites on actin are uncovered, allowing myosin to bind and carry out power strokes

4.Ca2+ is released from the sarcoplasmic reticulum

5.chemically-gated ion channels open, causing depolarization

6.Ca2+ bind to troponin, moving the tropomyosin

7.transverse tubules convey potentials into the interior of the cell

1.end plate potentials trigger action potentials

2.ACh binds to receptors on the motor end plate

3.binding sites on actin are uncovered, allowing myosin to bind and carry out power strokes

4.Ca2+ is released from the sarcoplasmic reticulum

5.chemically-gated ion channels open, causing depolarization

6.Ca2+ bind to troponin, moving the tropomyosin

7.transverse tubules convey potentials into the interior of the cell

Explanation / Answer

1) nerve action potential.
5) transverse tubules convey..
4)calcium ion released from...

7)ca 2+ bind to troponin...

3) binding sites on actin are uncovered..
2)Ach binds to recep....
5) opening of Na+
/K+
channels (cation channels).
7) postsynaptic membrane depolarization (EPP).

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